{"instruction": "You are an expert in relationship extraction. Please extract relationship triples that match the schema definition from the input. Return an empty list for relationships that do not exist. Please respond in the format of a JSON string.", "schema": ["title of person", "founded by", "spouse", "city of headquarters"], "input": "On October 27 2009 Air Philippines began operating all  PAL Express  flights on behalf of  Philippine Airlines  ."}
{"title of person": [], "founded by": [], "spouse": [], "city of headquarters": []}